Carbureter for gas-engines.



No. 726,986. PATENTED MAY 5, 1903. A. PETELER.

GARBURETER POR GAS ENGINES.

APPLIGATION FILED APB.. 7, 1902.

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A. PETELER.

CARBURBTER FOR GAS ENGINES.

APPLIOATION FILED APR. 7, 1902.

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AThNT OFFICE.

ADOLPH'PETELER, OF ST. LOUIS, MISSOURI, ASSIGNOR TO MISSOURI LOCOVOLO COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION oF MISSOURI.

CARBURETER FOR GAS-ENGINES.

SPECIFICATION formingpart of Letters Patent No. 726,986, dated May 5, 1903.

Application filed April 7, 1902. Serial No. 101,750. (No model.)

To @Z5 whom t may concern: Beit known that LADOLPH PETELER, acitizen of the United States, residing at St. Louis, Missouri,haveinvented a certain new and useful Improvement in Carbureters, of which the following is a full, clear, and eXact description, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, forrqing part of this specification, in which- Figure 1 is a vertical sectional view of my improved carbureter. Fig. 2 is a vertical cross-sectional view on line 2 2, Fig. 1. Fig. 3 is a sectional View on line 3 3, Fig. 2; and Fig. 4 is a detail View of the valve air-intake cap.

This invention relates to a carbureter for use in connection with gas-engines, the object being to provide a device which is simple in construction and which will enable the operator to control the richness of vthe fuel delivered to the engine.

With this object in view myinvention consists in the construction, arrangement, and combination of the several parts of my device, all as will hereinafter be described and afterward pointed out in the claims.

In the drawings, 1 indicates the casting, formed with two chambers 2 and 3. Chamber 2 contains a float 4, which cooperates with a needle-valve 5, whereby the height of the liquid fuel may be maintained in the chamber 2. 6 indicates an inlet-pipe for the liquid fuel, which enters a cap and passes linto the chamber 2 through an opening 7,

which is controlled by the valve 5. This cap is preferably held in position by means of a yoke 8. Chamber 2 is provided with an outlet-opening 9 in its bottom, which leads to a stand-pipe 10, located in chamber 3. The upper end of this stand-pipe receives a bellshaped cap 11, which cap supports a disk12, provided with concentric grooves 13. v Small openings 14 establish communication between the grooves 13 and the bore of standpipe 10. In practice it is designed that the liquid in chamber 2 shall be level with the upper surface of plate 12,whereby the grooves 13 are constantly filled with liquid fuel; but

' said fuel is prevented from overfiowing into chamber 3. Liquid overflowing in chamber 3 can escape through an opening 3a. 15 indicates a cap for closing chamber 3, said cap being-provided with a dome, into which opens an air-intake port 16.

A plug 17 closes the upper end of the dome and also forms a bearing for a rotatable rod 18, said rod being provided with a returnbend 19, whereby its end may coperate with openings or recesses in the plug 17 for holding the rod 18 in' a rotatably-adjusted position. In practice this rod is designed to be rotated in an arc of a circle comprehended within forty-five degrees-to wit, approximately one-fourth of a circle.

Thelower end of the dome above referred to is provided with an opening in which is received a valve-seat 20. (See Fig. 4.) This valve-seat is formed with openings 2l in its bottom wall and openings 22 in its side walls. A valve 23 is arranged on the lower end of `stem 18 and is provided with openings 24 in its bottom wall, as well as openings 25 in its side walls. Openings 24 are designed to register with openings 21 at the time that openings 25 are out of register with openings 22, and vice versa. In this manner, irrespective of the position of the valve 23, the same amount of air is admitted into chamber 3, or by adj listing the valve the point of admission may be regulated. To illustrate the function of this, if the liquid fuel is of poor quality and it is desired that the air shall become greatly enriched thereby valve 23 is adjusted so that openings 2l and 24 are in register. This permits the air entering through port 16 to pass down through valve 23 and directly onto the surface of the liquid fuel contained in the grooves 13. On the other hand, if the liquid fuel is of medium qualit-y the rod 18 majT be adjusted so that part ofthe air will pass through openings 22 25 and the remainder through the openings 21 24. If the fuel is very rich and it is desired that the air be admitted only through the openings 22 25, the stem 18 is adjusted accordingly, in which position openings 21 24 will be out of register.

A spring 26 encircles the stem 18 to hold the valve 23 to its seat. The above descrip- IOO tion relates to one way of enriching the air according to my improved carbureter, and it will be obvious that the enriched air Will by this construction be thoroughly mixed and commingled with the Vaporized fuel.

Referring now to Figs. 2 and 3, it will be observed that chamber 3 is provided with an opening 27 in its bottom, which opening is controlled by a rotary valve 2S, arranged in a suitable chamber, the bottom wall of said chamber being provided with an opening 29 in vertical alinement with the opening 27. Valve 28 is in the form of an open-ended cylinder with approximately one-half of its side Wall removed, as at 30. The outer end of valve 28 is closed and carries a handle or lever 3l, by which said valve may be rotated in its seat.

When it is desired to regulate the richness of the fuel admitted to the engine Without disturbing the position of valve 23, as under varying conditions of load imposed upon the engine, valve 28 may be adjusted in its seat so as to regulate the admission of mixed air and gas through the Opening 27 and at the same time the quantity of additional air to be mixed therewith and which is admitted from the exterior through the opening 29. This regulation is very desirable, as where the engine is running Without load the valve 28 can be adjusted, as shown in Fig. 3, so as to admit a small quantity of mixed air and gas from chamber 3 and a relatively large quantity of fresh air through port 29, the product from chamber 3 being sufficient to run the engine under no load. When a load is imposed upon the engine, the valve 28 may be adjusted so as to admit more of the product from chamber 3 and less through port 29, depending upon the load carried by the engine, this adjustment of valve 28 being continued to apoint where port 29 is entirely closed, and the product passing through the end of valve 28 is received entirely from chamber 3. This position of the valve is desirable when a full load is imposed upon the engine. From the above it will be seen that according to the quality of the liquid fuel used the valve 23 can be adj usted to secure the proper proportion of vapor and air in chamber 3 to produce the best results. rIhen without changing this proportion of mixed air and gas valve 28 can be adj usted according to the load imposed upon the engine.

32 indicates a throttle-valve, preferably of the same type as valve 28-that is, its inner end is open and registers with the open inner end of valve 28. Its outer end is closed and provided with a handle 33, by Awhich said valve can be rotated. This throttle-valve is provided with an opening 34 in its side wall, which controls the amount of fuel entering chamber 35. A pipe leads from this chamber 35 to the engine. v

When it is desired to shut ed fuel from the engine, the valve 32 is manipulated. Valve 32 can also be adjusted so as to regulate the quantity of fuel admitted to the engine; but the position of valve 32 does not in any way control the richness of the fuel. Valve 28 controls the richness of the fuel, and in all working positions of said valve 28 the areas lof ports 27 and 29, combined or individually, depending upon the position of the valve, equal the area of port 34:. Valve 23 controls the admission of air and is adjusted according to the quality of fuel used. After the proper proportion of air and gas has been determined by adjusting the position of this valve 23 said valve is permitted to remain stationary.

For purposes of distinction I will refer to the plate l2 as a fuel-pam7 because the fuel is held by concentric grooves in this plate to be vaporized in the same manner as if said plate were a pan.

While in the drawings valve 23 is shown with its vertical and lateral openings so proportioned with respect to the corresponding openings in the valve-seat that the same quantity of air is admitted in all positions of said valve, it is obvious that the size of these openings could be changed, so that in different positions of the valve apy desired quantity of air could be admitted. These remarks also apply with respect to the outlet-opening leading from the chamber containing mixed air and gas. The openings 27 and 29,while shown in the drawings of equal size, could be of different sizes and differently located with respect to the valve; but in changing the relative location of these openings with respect to the valve it is my object to reduce the volume of mixed air and gas entering the valve when the air-port 29 is opened to any considerable extent, and vice versa.

I am aware that many minor changes in the construction, arrangement, and combination of the several parts of my device can be made and substituted for those herein shown and described Without in the least departing from the nature and principle of my invention.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. In a carbureter, the combination with a fuel-pan, of an-air-port located above said pan, and a valve for admitting the air directly onto the fuel in the pan, or laterally above the pan; substantially as described.

2. In a carbureter, the combination with a fuel-pan, of means for maintaining a given level of fuel in said pan, an air-port above saidpan, and means for admitting air directly onto the fuel in the pan, or laterally with respect to the fuel in the pan; substantially as described.

3. In a carbureter, the combination with a fuel-pan, of means for maintaining a given level of fuel in said pan, an air-port located above said pan and provided with vertical and lateral openings, and means for control ling said openings whereby the air is directed IOO IIO

onto the fuel in the pan, or laterally with respect to the fuel in the pan substantially as described.

4E. In a carbureter, the combination with a casing, of a fuel-pan located therein, an airport in the casing above said fuel-pan, and means coperating with said air-port whereby the air is directed downwardly or laterally, or both downwardly and laterally, said means, in its different positions, permitting the ingress of substantially the same volume of air at all times; substantially as described.

5. In a carbureter, the combination with a casing, of a fuel-pan arranged therein, a valveseat in the casing above the fuel-pan, said seat being provided With vertical and lateral openings, and a valve coperating with said seat, which valve is also provided with vertical and lateral openings; substantially as described.

6. In a carbureter, the combination with a casin g, of afuel-pan arranged therein, a valveseat above said fuel-pan provided with vertical and lateral openings, a valve coperatin g with said seat also provided With vertical and lateral openings, and means for locking said valve in its different adjusted positions; substantially as described.

7. In a carbureter, the combination with a casing, of afuel-pan arranged therein, a valveseat located above said fuel-pan and provided with vertical and lateral openings, a valve in said seat, which valve is also provided with vertical and lateral openings, a stem on said valve which projects through said casing to the exterior, and means on said stern for locking the valve in rotatably-adjusted positions; substantially as described.

Y 8. In a carbureter, the combination with a casing containing a chamber, a fuel-pan arranged in said chamber, an air-inlet opening into said chamber, means for changing the direction of admission of the entering air, whereby the richness thereof in the chamber is regulated, an exit-opening leading from said chamber, and a valve for controlling said exit-opening; substantially as described.

9. In a carburetor, the combination with a casing, of a fuel-pan located therein, means for maintaining a given level of fuel in said pan, an adjustable valve provided with vertical and horizontal openings through the same for controlling the point of admission of air which is to absorb the vapor from the fuel in said pau, a valve 28 for controlling the richness of the air charged by the fuel, and a y throttle-valve substantially as described.

l0. In a carbureter, the combination with a casing, of a fuelpan arranged therein, means for maintaining a given level of fuel in said pan, an air-inlet port located above said pan, means in said inlet-port for controlling the direction of the current of incoming air, a mixing-chamber, an outlet-port leading from said chamber, aplug-valve fory controlling said outlet-opening, an air-inlet port also controlled by said plug-Valve, and a throttlevalve for controlling the gases passing through the plug-valve; substantially as described.

In testimony whereof I hereunto affix my signature, in the presence of two witnesses, this 5th day of April, 1902.

ADOLPH PETELER.

Witnesses:

S. E. FREEMAN, F. R. CORNWALL. 

